Function callback

HTML5Volume.user.js:101–117

(mutationsList, observer)

    // 后续动态插入的 Video Audio 标签（插入事件）
    function insPage() {
        const callback = (mutationsList, observer) => {
            for (const mutation of mutationsList) {
                for (const target of mutation.addedNodes) {
                    if (target.nodeType != 1) break
                    //console.log('所有插入：', target)
                    if (target.tagName === 'VIDEO' || target.tagName === 'AUDIO') {
                        //console.log('后续插入1：', target)
                        isFirstEvent(target)
                    } else if (target.tagName === 'DIV') {
                        target.querySelectorAll('video, audio').forEach(function(_this){
                            //console.log('后续插入2：', _this)
                            isFirstEvent(_this)
                        })
                    }
                }
            }
        };
        const observer = new MutationObserver(callback);
        observer.observe(document, { childList: true, subtree: true });
    }